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Papers
61,005 resultsShowing papers similar to Atomistic mechanisms of cyclic hardening in metallic glass
ClearStructural changes in a metallic glass under cyclic indentation
Researchers used computer simulations to study how a metallic glass material — a disordered metal alloy — changes at the atomic level when repeatedly pressed with an indenter, finding that the material initially relaxes structurally but then gradually rebuilds its original structure, explaining the known phenomenon of metals getting harder with repeated deformation cycles.
Viscosity and transport in a model fragile metallic glass
This paper uses the term 'microplasticity' in the context of metallic glass physics, describing how thermally activated atomic movements drive deformation in amorphous metals at the microscale. This is a materials physics paper unrelated to environmental microplastic pollution.
Stress breaks universal aging behavior in a metallic glass
Researchers discovered that applying mechanical stress to metallic glass — an amorphous, non-crystalline metal — disrupts the material's predictable aging behavior by triggering localized microscale plastic deformation events (called microplastic events) that cause irregular, unpredictable changes in the material's internal structure. This finding challenges a long-standing universal model used to predict how metallic glasses behave under stress over time.
Metallic glasses: Elastically stiff yet flowing at any stress
Researchers demonstrated that metallic glass, an amorphous solid with high yield stress, lacks a true microscopic elastic limit. Using coherent X-ray scattering, they found that even extremely small stresses accelerate atomic-scale transport within the material. The findings reveal fundamental differences in how amorphous and crystalline solids respond to mechanical stress at the atomic level.
Atomic cluster dynamics causes intermittent aging of metallic glasses
Researchers used computer simulations to investigate why metallic glasses age in an intermittent, stop-and-start pattern rather than gradually slowing down over time. They found that this behavior is driven by sudden collective rearrangements of small clusters of atoms within the material. The study provides new insights into the fundamental physics of how glassy materials change their structure over time.
Role of Densification in Deformation of Glasses Under Point Loading
This materials science paper proposes that so-called 'microplastic effects' in glass under point loading are caused by densification rather than conventional plastic flow. The research focuses on glass mechanics and hardness, using 'microplastic' in an engineering context with no relation to environmental plastic pollution.
Atomistic Studies of Nanoindentation—A Review of Recent Advances
This review covers advances in using computer simulations to understand how materials deform at the nanoscale during nanoindentation testing. The research is in materials science and not directly related to environmental microplastics.
Rejuvenation engineering in metallic glasses by complementary stress and structure modulation
Researchers used X-ray diffraction to study how stress and structural rejuvenation affect the mechanical properties of metallic glasses at a microscale. While focused on materials science, understanding plastic deformation in amorphous metals contributes to developing more durable engineered materials.
Plastic intermittency during cyclic loading: From dislocation patterning to microcrack initiation
This physics study examines how dislocation patterns in metals under cyclic loading lead to fatigue crack initiation at the microscale. It is a materials science paper studying microscale plastic deformation in metals, unrelated to environmental microplastics.
Severe Plastic Deformation of Amorphous Alloys
This materials science paper examines how high-pressure torsion affects the structure and properties of metallic glass alloys. The research is not related to microplastics or environmental health.
Analysis of fatigue crack initiation in cyclic microplasticity regime
This engineering study analyzed how fatigue cracks begin in metals under cyclic loading, focusing on microscale stress and material defects. It is a materials science paper not related to environmental microplastics.
Stability of retained austenite in high carbon steel under compressive stress: an investigation from macro to nano scale
This materials science study investigates how retained austenite in high-carbon steel behaves under compressive stress at both macro and nano scales, using electron microscopy and diffraction techniques. The research addresses industrial steel performance and has no direct connection to microplastics or environmental health.
Rejuvenation engineering in metallic glasses by complementary stress and structure modulation
Researchers used X-ray diffraction, microscopy, and computer simulations to study how metallic glasses — disordered metal alloys with potential structural uses — behave under compression, finding that combining stress and structural changes together enhances ductility more than either alone. The work provides a roadmap for designing stronger, tougher metallic glass materials by engineering complementary stress and microstructural effects.
Beyond Serrated Flow in Bulk Metallic Glasses: What Comes Next?
This is a materials science article on serrated flow and plastic deformation in bulk metallic glasses, exploring unusual mechanical behavior in these amorphous metals. It is not related to microplastics or environmental science.
Simulating the mechanisms of serrated flow in interstitial alloys with atomic resolution over diffusive timescales
Researchers used computer simulations to model how atoms and structural defects interact in metal alloys during deformation, revealing three distinct behavioral regimes that explain a phenomenon called jerky or unstable plastic flow. This fundamental materials science work improves understanding of how metals behave under stress, which has no direct connection to microplastics pollution.
Resistance of Heterogeneous Metal Compositions to Fracture under Dynamic and Cyclic Loads
This study examined how heterogeneous multilayer metal composites resist fracture under dynamic and cyclic loading, finding that layer boundaries retard crack propagation compared to homogeneous materials. The findings are relevant to materials engineering for durable structures, though not directly related to microplastic research.
Correlated disorder in a model binary glass through a local SU(2) bonding topology
This paper models the microscopic bonding topology of metallic glass using a mathematical framework. It is a materials science study with no direct relevance to microplastics or human health.
Variety of scaling behaviors in nanocrystalline plasticity
This is a materials science study examining the variety of scaling behaviors observed in nanocrystalline plasticity, exploring how grain size affects deformation mechanisms in metals. It is not related to environmental microplastics.
Role of Grain Boundary Sliding in Texture Evolution for Nanoplasticity
This materials science paper presents a crystal plasticity model for how grain boundary sliding affects texture evolution in nanocrystalline metals under large deformation. It is a technical metallurgy study with no connection to microplastics or environmental health.
Grain size effects and weakest link theory in 3D crystal plasticity simulations of polycrystals
This study applied the weakest link theory to 3D crystal plasticity simulations to understand size effects on the mechanical behavior of metals. The research is focused on materials science and has no direct relevance to microplastic pollution.
Discontinuous yielding of pristine micro-crystals
This theoretical physics paper develops a model for crystal deformation in dislocation-free materials. While not related to environmental science or microplastics, the work contributes to materials science research on plastic deformation at the microscale.
Quantifying Co-Deformation Effects in Metallic Laminates by Loading–Unloading–Reloading Tensile Tests
This paper is not about microplastics; it investigates the mechanical co-deformation behavior of metallic laminate materials using cyclic tensile loading tests.
Nontrivial scaling exponents of dislocation avalanches in microplasticity
This physics study analyzed the statistical patterns of small-scale deformation events (dislocation avalanches) in metals to test theoretical models of material plasticity. The research is in materials physics and is not related to environmental microplastics.
Crack tip microplasticity mediated by microstructure gradients
This study examined how microstructural gradients near crack tips affect crack growth behavior in metals under mechanical loading. The research is focused on materials fracture mechanics and has no direct relevance to microplastic pollution.